Configuration of a Medical Radiotherapeutic Instrument

ABSTRACT

A configuration of a medical radiotherapeutic instrument comprising a body of ray source, a switch and an end collimation body, a pre-collimation hole and a ray source cavity for placing ray source are defined on the body of ray source; the switch is a plentiful of pillars coupled with a drive unit, the pillars are disposed inside the body of the ray source, a middle collimation hole is defined on each pillar; under the driving of the drive unit, the pillars arise a displacement to make the middle collimation hole to aim at or depart from the pre-collimation hole; the end collimation body is disposed inside the body of the ray source, and an end collimation hole is defined on the end collimation body, the end collimation hole is connected with the pre-collimation hole through the middle collimation hole to form a therapy path. The configuration of the present invention is simplified in structure and low in cost, with this structure, it can control the switch separately, and continuously adjust the radiate amount.

CROSS REFERENCE TO RELATED PATENT APPLICATION

This application claims the priorities of the Chinese patent application No. 200620137766.5, which has a filing date of Oct. 8, 2006 and the Chinese patent application No. 200620137765.0, which has a filing date of Oct. 8, 2006.

FIELD OF THE INVENTION

The present invention relates to medical equipments, more particularly, relates to a medical radiotherapeutic instrument.

BACKGROUND OF THE INVENTION

Traditional encephalic surgical may cause syndrome or even lead the patient to death, so years ago, a Sweden professor, Doctor Leksell, firstly presented a concept of “Stereotactic Radio surgery” (SRS), which is applying the theory of stereotaxic to use high-octane ray focusing irradiation and to destroy targeted organisms, thus to cure the sickness. This kind of encephalic diseases therapeutics that applying radial then is named as stereotactic radiosurgery science, and it started a new century of no wound radiosurgery.

Ordinarily, traditional radiotherapeutic instrument comprises of a body of ray source, a switch and an end collimation body. FIG. 1 of the drawings shows an embodiment of the radiotherapeutic instrument in prior art, and FIG. 2 is the sectional view of the instrument in FIG. 1. As shown in FIGS. 1 and 2, the radiotherapeutic instrument comprises a ray source body 1, a switch 2 and an end collimation body 3, a ray source cavity 4 and a pre-collimation hole 5 are defined on the ray source body 1, a middle collimation hole 7 is set on switch 2, and an end collimation hole 8 is defined on the end collimation body 3; the pre-collimation hole 5, middle collimation hole 7 and end collimation hole 8 can be connected to form a therapy path. The switch 2 usually is integrated as a whole, the middle collimation hole 8 will depart from or aim at the pre-collimation hole 5 of the ray resource body by the movement of the switch, therefore to switch on or off the therapy path. But with this configuration, the radial passageway will entirely turn on or off when switching on/off the ray resource, it can not realize continuously and flexibly adjust the radiate amount.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a configuration of a medical radiotherapeutic instrument, which is simplify in structure and low in cost, it can control the switch separately, and continuously adjust the radiate amount.

The technical solution of the present invention is, provides a configuration of a medical radiotherapeutic instrument that comprising a body of ray source, a switch and an end collimation body, wherein

a pre-collimation hole and a ray source cavity for placing ray source are defined on the body of ray source;

the switch is a plentiful of pillars coupled with a drive unit, the pillars are disposed inside the body of the ray source, a middle collimation hole is defined on each pillar; under the driving of the drive unit, the pillars arise a displacement to make the middle collimation hole to aim at or depart from the pre-collimation hole;

the end collimation body is disposed inside the body of the ray source, and an end collimation hole is defined on the end collimation body, the end collimation hole is connected with the pre-collimation hole through the middle collimation hole to form a therapy path.

Preferably, the drive unit is a linear driver to drive the pillars move linearly to open or close the therapy path.

Preferably, the drive unit is a rotational driver to drive the pillars move rotationally to open or close the therapy path.

The configuration of the medical radiotherapeutic instrument of the present invention has the advantages of simplify in structure and low in cost; the linear driver or rotational driver controls each pillar to move forwardly or backwardly, or to move rotationally, and makes the middle collimation hole departing from the pre-collimation hole therefore to switch on/off the ray source, and neatly adjust the radiate amount.

BRIEF DESCRIPTION OF THE INVENTION

FIG. 1 is the schematic view of the medical radiotherapeutic instrument in the prior art;

FIG. 2 is the sectional view of the medical radiotherapeutic instrument as in FIG. 1;

FIG. 3 is the schematic view of one preferred embodiment of the medical radiotherapeutic instrument, in accordance with the present invention;

FIG. 4 is the structure view of the medical radiotherapeutic instrument as in FIG. 3;

FIG. 5 is the schematic view of another preferred embodiment of the medical radiotherapeutic instrument, in accordance with the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

As shown in FIGS. 3 and 4, one preferred embodiment of the present invention is provided, the medical radiotherapeutic instrument comprising a body of ray source 1, a switch 2 and an end collimation body 3, wherein a pre-collimation hole 5 and a ray source cavity 4 for placing ray source are defined on the body of ray source 1; the switch 2 is a plentiful of pillars that disposed inside the body of the ray source 1, and on the top end of each pillar, a middle collimation hole 8 is defined on each pillar, and a drive unit 7 is installed thereon also; the drive unit 7 is a linear driver that can drive each pillar to move forwardly or backwardly, thus to make the middle collimation hole 8 to aim at or depart from the pre-collimation hole 5 of the ray source body, as shown in FIG. 1; the end collimation body 3 is disposed inside the body of the ray source 1, and an end collimation hole 9 is defined on the end collimation body 3.

When in operation, the switch 2 is driven by the drive unit 7 to make the middle collimation hole 8 aim at the pre-collimation hole 5, so the pre-collimation hole 5, middle collimation hole 8 and end collimation hole 9 are connected, thus a therapy path is formed. Or, under the driving of the drive unit 7, the switch 2 will make the middle collimation hole 8 to depart from the pre-collimation hole 5, thus to turn off the therapy path and to neatly adjust the radiate amount.

Another preferred embodiment of the present invention is shown in FIG. 5, in which the switch 2 is a plentiful of pillars that disposed inside the body of the ray source 1, and on the top end of each pillar, a middle collimation hole 8 is defined on each pillar, and a drive unit 7 is installed thereon also, the drive unit 7 is a rotational driver that can drive each pillar to move rotationally, thus to make the middle collimation hole 8 to aim at or depart from the pre-collimation hole 5 of the ray source body.

The configuration for radiotherapeutic instrument of the present invention has the advantages of simplify in structure and low in cost; the linear driver or rotational drive unit 7 controls each pillar to move forwardly or backwardly or to move rotationally, and makes the middle collimation hole 8 departing from the pre-collimation hole 5 therefore to switch on/off the ray source, and neatly adjust the radiate amount.

Throughout the specification the aim has been to describe the preferred embodiment of the present invention without limiting the invention to any one embodiment or specific collection of features. Persons skilled in the relevant art may realize variations from the specific embodiment that will nonetheless fall within the scope of the invention. 

1. A configuration of a medical radiotherapeutic instrument, comprising a body of ray source, a switch and an end collimation body, wherein a pre-collimation hole and a ray source cavity for placing ray source being defined on the body of ray source; the switch being a plentiful of pillars coupled with a drive unit, the pillars being disposed inside the body of ray source, a middle collimation hole being defined on each pillar; under driving of the drive unit, the pillars arising a displacement to make the middle collimation hole to aim at or depart from the pre-collimation hole; the end collimation body being disposed inside the body of the ray source, and an end collimation hole being defined on the end collimation body, the end collimation hole being connected with the pre-collimation hole through the middle collimation hole to form a therapy path.
 2. The configuration of a medical radiotherapeutic instrument as in claim 1, wherein the drive unit is a linear driver to drive the pillars move linearly to open or close the therapy path.
 3. The configuration of a medical radiotherapeutic instrument as in claim 1, wherein the drive unit is a rotational driver to drive the pillars move rotationally to open or close the therapy path. 